Your q's have been answered pretty well in the first part of the thread. But why bother with all this faffing around and learning a new click table etc etc when you can do the job just as well with your rifle that is designed and made to shoot Mk7, a telescope that is calibrated to cater for the trajectory of Mk7 and the two, matched together as a pair that were actually matched for........., yep, got it in one........ Mk7. The PMer who mentioned the thread 19 hit the nail on the head

Nope, the use of Mk8z doesn't stand any degree of close scrutiny let alone a bit of forensic thought.

I wish your question had asked about leed wear with MG barrels using Mk8z and the No2 leed wear gauges. No, on second thoughts, let sleeping dogs lie and the original questioner can make his own decision